Yahoo's reinvention as a mobile app platform continues as U.S. consumers now spend 90 percent of their mobile device time in apps, and not in the browser. Yahoo is touting the importance of mobile apps over browsers and providing several new tools to help programmers make them. Using data from its Flurry analytics platform, acquired last year, Yahoo paints a picture of growing importance for mobile apps. The company says during April to June this year, U.S. consumers spent 35 percent more time on their mobile devices than the same time period last year, now up to ...